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PHF6 cooperates with SWI/SNF complexes to facilitate transcriptional progression [ATAC-seq]

GSE180486 Homo sapiens Genome binding/occupancy profiling by high throughput sequencing 7 samples Submitted 2024/06/07 Platform GPL24676
Summary
Genes encoding subunits of SWI/SNF(BAF) chromatin remodeling complexes are collectively mutated in nearly 25% of all cancers. Utilizing a genome-wide CRISPR-Cas9 screen, we identify PHF6 as a specific vulnerability in pediatric malignant rhabdoid tumors (RTs), which are driven by inactivation of the SMARCB1 subunit of SWI/SNF. We establish that PHF6 co-localizes with residual SWI/SNF subcomplexes at promoters and enhancers. Here, PHF6 facilitates transcriptional activation by regulating deposition of H3K14ac downstream of active promoters and contributes to the establishment of H3K27ac at active promoters and enhancers. We show that PHF6 is essential for the maintenance of these marks in part via the regulation of their writers, HB01 and CBP/p300, respectively. As it directly regulates the H3K14ac mark, PHF6 may regulate pausing and serve as a mediator between chromatin regulatory function and RNA POL II pause release. Together, our results establish a mechanistic basis for dependence upon PHF6 in SMARCB1-mutant RTs.
Published in
PHF6 cooperates with SWI/SNF complexes to facilitate transcriptional progression
Mittal P, Myers JA, Carter RD et al. · Nature communications 2024 · PMID 39181868 · doi:10.1038/s41467-024-51566-5
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Also filed as BioProject PRJNA748402 and SRA study SRP329134. Searching any of these in the dataset finder brings you back here.

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